<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: XMLObjectSerializer.html 878 2015-04-17 01:32:03Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.util;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.google.common.collect.Iterables;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.io.InputStream;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.io.OutputStream;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.io.Writer;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.util.ArrayList;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import java.util.Arrays;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import java.util.Collection;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import java.util.Collections;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.util.Comparator;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.HashMap;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.Map;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.NavigableSet;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.TreeSet;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.regex.Matcher;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.regex.Pattern;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import javax.xml.XMLConstants;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import javax.xml.namespace.QName;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import javax.xml.stream.XMLInputFactory;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import javax.xml.stream.XMLOutputFactory;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import javax.xml.stream.XMLStreamConstants;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import javax.xml.stream.XMLStreamException;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import javax.xml.stream.XMLStreamReader;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import javax.xml.stream.XMLStreamWriter;<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.dellroad.stuff.xml.IndentXMLStreamWriter;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.jsimpledb.core.CollectionField;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.jsimpledb.core.CounterField;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.jsimpledb.core.Field;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.jsimpledb.core.FieldType;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.jsimpledb.core.ListField;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.jsimpledb.core.MapField;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.jsimpledb.core.ObjId;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.jsimpledb.core.ObjType;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.jsimpledb.core.ReferenceField;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.jsimpledb.core.Schema;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.jsimpledb.core.SchemaItem;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.jsimpledb.core.SetField;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.jsimpledb.core.SimpleField;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.jsimpledb.core.SnapshotTransaction;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.jsimpledb.core.Transaction;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import org.jsimpledb.core.UnknownTypeException;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import org.jsimpledb.schema.NameIndex;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import org.jsimpledb.schema.SchemaField;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import org.jsimpledb.schema.SchemaModel;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import org.jsimpledb.schema.SchemaObjectType;<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span>/**<a name="line.58"></a>
<span class="sourceLineNo">059</span> * Utility methods for serializing and deserializing objects in a {@link Transaction} to/from XML.<a name="line.59"></a>
<span class="sourceLineNo">060</span> *<a name="line.60"></a>
<span class="sourceLineNo">061</span> * &lt;p&gt;<a name="line.61"></a>
<span class="sourceLineNo">062</span> * There are two supported formats. The "Storage ID Format" specifies objects and fields using their storage IDs<a name="line.62"></a>
<span class="sourceLineNo">063</span> * and supports all possible database contents.<a name="line.63"></a>
<span class="sourceLineNo">064</span> *  &lt;pre&gt;<a name="line.64"></a>
<span class="sourceLineNo">065</span> *  &amp;lt;objects&amp;gt;<a name="line.65"></a>
<span class="sourceLineNo">066</span> *      &amp;lt;object storageId="100" id="64a971e1aef01cc8" version="1"&amp;gt;<a name="line.66"></a>
<span class="sourceLineNo">067</span> *          &amp;lt;field storageId="101"&amp;gt;George Washington&amp;lt;/field&amp;gt;<a name="line.67"></a>
<span class="sourceLineNo">068</span> *          &amp;lt;field storageId="102"&amp;gt;true&amp;lt;/field&amp;gt;<a name="line.68"></a>
<span class="sourceLineNo">069</span> *          &amp;lt;field storageId="103"&amp;gt;<a name="line.69"></a>
<span class="sourceLineNo">070</span> *              &amp;lt;entry&amp;gt;<a name="line.70"></a>
<span class="sourceLineNo">071</span> *                  &amp;lt;key&amp;gt;teeth&amp;lt;/key&amp;gt;<a name="line.71"></a>
<span class="sourceLineNo">072</span> *                  &amp;lt;value&amp;gt;wooden&amp;lt;/value&amp;gt;<a name="line.72"></a>
<span class="sourceLineNo">073</span> *              &amp;lt;/entry&amp;gt;<a name="line.73"></a>
<span class="sourceLineNo">074</span> *          &amp;lt;/field&amp;gt;<a name="line.74"></a>
<span class="sourceLineNo">075</span> *          &amp;lt;field storageId="104"&amp;gt;c8b84a08e5c2b1a2&amp;lt;/field&amp;gt;<a name="line.75"></a>
<span class="sourceLineNo">076</span> *      &amp;lt;/object&amp;gt;<a name="line.76"></a>
<span class="sourceLineNo">077</span> *      ...<a name="line.77"></a>
<span class="sourceLineNo">078</span> *  &amp;lt;/objects&amp;gt;<a name="line.78"></a>
<span class="sourceLineNo">079</span> *  &lt;/pre&gt;<a name="line.79"></a>
<span class="sourceLineNo">080</span> *<a name="line.80"></a>
<span class="sourceLineNo">081</span> * &lt;p&gt;<a name="line.81"></a>
<span class="sourceLineNo">082</span> * "Name Format" differs from "Storage ID Format" in that object types and fields are specified by name instead of storage ID.<a name="line.82"></a>
<span class="sourceLineNo">083</span> * However, it does not support schemas that use names that are not valid XML tags.<a name="line.83"></a>
<span class="sourceLineNo">084</span> * &lt;pre&gt;<a name="line.84"></a>
<span class="sourceLineNo">085</span> *  &amp;lt;objects&amp;gt;<a name="line.85"></a>
<span class="sourceLineNo">086</span> *      &amp;lt;Person id="64a971e1aef01cc8" version="1"&amp;gt;<a name="line.86"></a>
<span class="sourceLineNo">087</span> *          &amp;lt;name&amp;gt;George Washington&amp;lt;/name&amp;gt;<a name="line.87"></a>
<span class="sourceLineNo">088</span> *          &amp;lt;wasPresident&amp;gt;true&amp;lt;/wasPresident&amp;gt;<a name="line.88"></a>
<span class="sourceLineNo">089</span> *          &amp;lt;attributes&amp;gt;<a name="line.89"></a>
<span class="sourceLineNo">090</span> *              &amp;lt;entry&amp;gt;<a name="line.90"></a>
<span class="sourceLineNo">091</span> *                  &amp;lt;key&amp;gt;teeth&amp;lt;/key&amp;gt;<a name="line.91"></a>
<span class="sourceLineNo">092</span> *                  &amp;lt;value&amp;gt;wooden&amp;lt;/value&amp;gt;<a name="line.92"></a>
<span class="sourceLineNo">093</span> *              &amp;lt;/entry&amp;gt;<a name="line.93"></a>
<span class="sourceLineNo">094</span> *          &amp;lt;/attributes&amp;gt;<a name="line.94"></a>
<span class="sourceLineNo">095</span> *          &amp;lt;spouse&amp;gt;c8b84a08e5c2b1a2&amp;lt;/spouse&amp;gt;<a name="line.95"></a>
<span class="sourceLineNo">096</span> *      &amp;lt;/Person&amp;gt;<a name="line.96"></a>
<span class="sourceLineNo">097</span> *      ...<a name="line.97"></a>
<span class="sourceLineNo">098</span> *  &amp;lt;/objects&amp;gt;<a name="line.98"></a>
<span class="sourceLineNo">099</span> *  &lt;/pre&gt;<a name="line.99"></a>
<span class="sourceLineNo">100</span> *<a name="line.100"></a>
<span class="sourceLineNo">101</span> * &lt;p&gt;<a name="line.101"></a>
<span class="sourceLineNo">102</span> * Some details on the input logic:<a name="line.102"></a>
<span class="sourceLineNo">103</span> * &lt;ul&gt;<a name="line.103"></a>
<span class="sourceLineNo">104</span> *  &lt;li&gt;Simple fields that are equal to their default values, and complex fields that are empty, may be omitted&lt;/li&gt;<a name="line.104"></a>
<span class="sourceLineNo">105</span> *  &lt;li&gt;The {@code "version"} attribute may be omitted, in which case the default schema version associated with<a name="line.105"></a>
<span class="sourceLineNo">106</span> *      the {@link Transaction} being written to is assumed.&lt;/li&gt;<a name="line.106"></a>
<span class="sourceLineNo">107</span> *  &lt;li&gt;The {@code "id"} attribute may be omitted, in which case a random unassigned ID is generated&lt;/li&gt;<a name="line.107"></a>
<span class="sourceLineNo">108</span> *  &lt;li&gt;Any object ID (including the {@code "id"} attribute) may have the special form<a name="line.108"></a>
<span class="sourceLineNo">109</span> *      &lt;code&gt;generated:&lt;i&gt;TYPE&lt;/i&gt;:&lt;i&gt;SUFFIX&lt;/i&gt;&lt;/code&gt;, where &lt;code&gt;&lt;i&gt;TYPE&lt;/i&gt;&lt;/code&gt; is the object type<a name="line.109"></a>
<span class="sourceLineNo">110</span> *      name or storage ID and &lt;code&gt;&lt;i&gt;SUFFIX&lt;/i&gt;&lt;/code&gt; is an arbitrary string.<a name="line.110"></a>
<span class="sourceLineNo">111</span> *      In this case, a random, unassigned object ID for type &lt;code&gt;&lt;i&gt;TYPE&lt;/i&gt;&lt;/code&gt; is generated<a name="line.111"></a>
<span class="sourceLineNo">112</span> *      on first occurrence, and on subsequent occurences the previously generated ID is recalled. This facilitates<a name="line.112"></a>
<span class="sourceLineNo">113</span> *      input generated via XSL and the {@code generate-id()} function.<a name="line.113"></a>
<span class="sourceLineNo">114</span> *      The {@linkplain #getGeneratedIdCache configured} {@link GeneratedIdCache} keeps track of generated IDs.&lt;/li&gt;<a name="line.114"></a>
<span class="sourceLineNo">115</span> * &lt;/ul&gt;<a name="line.115"></a>
<span class="sourceLineNo">116</span> */<a name="line.116"></a>
<span class="sourceLineNo">117</span>public class XMLObjectSerializer extends AbstractXMLStreaming {<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span>    public static final QName ELEMENT_TAG = new QName("element");<a name="line.119"></a>
<span class="sourceLineNo">120</span>    public static final QName ENTRY_TAG = new QName("entry");<a name="line.120"></a>
<span class="sourceLineNo">121</span>    public static final QName FIELD_TAG = new QName("field");<a name="line.121"></a>
<span class="sourceLineNo">122</span>    public static final QName KEY_TAG = new QName("key");<a name="line.122"></a>
<span class="sourceLineNo">123</span>    public static final QName OBJECTS_TAG = new QName("objects");<a name="line.123"></a>
<span class="sourceLineNo">124</span>    public static final QName OBJECT_TAG = new QName("object");<a name="line.124"></a>
<span class="sourceLineNo">125</span>    public static final QName VALUE_TAG = new QName("value");<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
<span class="sourceLineNo">127</span>    public static final QName ID_ATTR = new QName("id");<a name="line.127"></a>
<span class="sourceLineNo">128</span>    public static final QName STORAGE_ID_ATTR = new QName("storageId");<a name="line.128"></a>
<span class="sourceLineNo">129</span>    public static final QName VERSION_ATTR = new QName("version");<a name="line.129"></a>
<span class="sourceLineNo">130</span>    public static final QName NULL_ATTR = new QName("null");<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span>    private static final Pattern GENERATED_ID_PATTERN = Pattern.compile("generated:([^:]+):(.*)");<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span>    private final Transaction tx;<a name="line.134"></a>
<span class="sourceLineNo">135</span>    private final HashMap&lt;Integer, NameIndex&gt; nameIndexMap = new HashMap&lt;&gt;();<a name="line.135"></a>
<span class="sourceLineNo">136</span><a name="line.136"></a>
<span class="sourceLineNo">137</span>    private GeneratedIdCache generatedIdCache = new GeneratedIdCache();<a name="line.137"></a>
<span class="sourceLineNo">138</span><a name="line.138"></a>
<span class="sourceLineNo">139</span>    /**<a name="line.139"></a>
<span class="sourceLineNo">140</span>     * Constructor.<a name="line.140"></a>
<span class="sourceLineNo">141</span>     *<a name="line.141"></a>
<span class="sourceLineNo">142</span>     * @param tx {@link Transaction} on which to operate<a name="line.142"></a>
<span class="sourceLineNo">143</span>     * @throws IllegalArgumentException if {@code tx} is null<a name="line.143"></a>
<span class="sourceLineNo">144</span>     */<a name="line.144"></a>
<span class="sourceLineNo">145</span>    public XMLObjectSerializer(Transaction tx) {<a name="line.145"></a>
<span class="sourceLineNo">146</span>        if (tx == null)<a name="line.146"></a>
<span class="sourceLineNo">147</span>            throw new IllegalArgumentException("null tx");<a name="line.147"></a>
<span class="sourceLineNo">148</span>        this.tx = tx;<a name="line.148"></a>
<span class="sourceLineNo">149</span><a name="line.149"></a>
<span class="sourceLineNo">150</span>        // Build name index for each schema version<a name="line.150"></a>
<span class="sourceLineNo">151</span>        for (Schema schema : this.tx.getSchemas().getVersions().values())<a name="line.151"></a>
<span class="sourceLineNo">152</span>            nameIndexMap.put(schema.getVersionNumber(), new NameIndex(schema.getSchemaModel()));<a name="line.152"></a>
<span class="sourceLineNo">153</span>    }<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span>    /**<a name="line.155"></a>
<span class="sourceLineNo">156</span>     * Get the {@link GeneratedIdCache} associated with this instance.<a name="line.156"></a>
<span class="sourceLineNo">157</span>     *<a name="line.157"></a>
<span class="sourceLineNo">158</span>     * @return the associated {@link GeneratedIdCache}<a name="line.158"></a>
<span class="sourceLineNo">159</span>     */<a name="line.159"></a>
<span class="sourceLineNo">160</span>    public GeneratedIdCache getGeneratedIdCache() {<a name="line.160"></a>
<span class="sourceLineNo">161</span>        return this.generatedIdCache;<a name="line.161"></a>
<span class="sourceLineNo">162</span>    }<a name="line.162"></a>
<span class="sourceLineNo">163</span><a name="line.163"></a>
<span class="sourceLineNo">164</span>    /**<a name="line.164"></a>
<span class="sourceLineNo">165</span>     * Set the {@link GeneratedIdCache} associated with this instance.<a name="line.165"></a>
<span class="sourceLineNo">166</span>     *<a name="line.166"></a>
<span class="sourceLineNo">167</span>     * @param generatedIdCache the {@link GeneratedIdCache} for this instance to use<a name="line.167"></a>
<span class="sourceLineNo">168</span>     * @throws IllegalArgumentException if {@code generatedIdCache} is null<a name="line.168"></a>
<span class="sourceLineNo">169</span>     */<a name="line.169"></a>
<span class="sourceLineNo">170</span>    public void setGeneratedIdCache(GeneratedIdCache generatedIdCache) {<a name="line.170"></a>
<span class="sourceLineNo">171</span>        if (generatedIdCache == null)<a name="line.171"></a>
<span class="sourceLineNo">172</span>            throw new IllegalArgumentException("null generatedIdCache");<a name="line.172"></a>
<span class="sourceLineNo">173</span>        this.generatedIdCache = generatedIdCache;<a name="line.173"></a>
<span class="sourceLineNo">174</span>    }<a name="line.174"></a>
<span class="sourceLineNo">175</span><a name="line.175"></a>
<span class="sourceLineNo">176</span>    /**<a name="line.176"></a>
<span class="sourceLineNo">177</span>     * Import objects pairs into the {@link Transaction} associated with this instance from the given XML input.<a name="line.177"></a>
<span class="sourceLineNo">178</span>     *<a name="line.178"></a>
<span class="sourceLineNo">179</span>     * &lt;p&gt;<a name="line.179"></a>
<span class="sourceLineNo">180</span>     * The input format is auto-detected for each {@code &lt;object&gt;} based on the presense of the {@code "type"} attribute.<a name="line.180"></a>
<span class="sourceLineNo">181</span>     * &lt;/p&gt;<a name="line.181"></a>
<span class="sourceLineNo">182</span>     *<a name="line.182"></a>
<span class="sourceLineNo">183</span>     * @param input XML input<a name="line.183"></a>
<span class="sourceLineNo">184</span>     * @return the number of objects read<a name="line.184"></a>
<span class="sourceLineNo">185</span>     * @throws XMLStreamException if an error occurs<a name="line.185"></a>
<span class="sourceLineNo">186</span>     * @throws IllegalArgumentException if {@code input} is null<a name="line.186"></a>
<span class="sourceLineNo">187</span>     */<a name="line.187"></a>
<span class="sourceLineNo">188</span>    public int read(InputStream input) throws XMLStreamException {<a name="line.188"></a>
<span class="sourceLineNo">189</span>        if (input == null)<a name="line.189"></a>
<span class="sourceLineNo">190</span>            throw new IllegalArgumentException("null input");<a name="line.190"></a>
<span class="sourceLineNo">191</span>        return this.read(XMLInputFactory.newFactory().createXMLStreamReader(input));<a name="line.191"></a>
<span class="sourceLineNo">192</span>    }<a name="line.192"></a>
<span class="sourceLineNo">193</span><a name="line.193"></a>
<span class="sourceLineNo">194</span>    /**<a name="line.194"></a>
<span class="sourceLineNo">195</span>     * Import objects into the {@link Transaction} associated with this instance from the given XML input.<a name="line.195"></a>
<span class="sourceLineNo">196</span>     * This method expects to see an opening {@code &lt;objects&gt;} as the next event (not counting whitespace, comments, etc.),<a name="line.196"></a>
<span class="sourceLineNo">197</span>     * which is then consumed up through the closing {@code &lt;/objects&gt;} event. Therefore this tag could be part of a<a name="line.197"></a>
<span class="sourceLineNo">198</span>     * larger XML document.<a name="line.198"></a>
<span class="sourceLineNo">199</span>     *<a name="line.199"></a>
<span class="sourceLineNo">200</span>     * &lt;p&gt;<a name="line.200"></a>
<span class="sourceLineNo">201</span>     * The input format is auto-detected for each {@code &lt;object&gt;} based on the presense of the {@code "type"} attribute.<a name="line.201"></a>
<span class="sourceLineNo">202</span>     * &lt;/p&gt;<a name="line.202"></a>
<span class="sourceLineNo">203</span>     *<a name="line.203"></a>
<span class="sourceLineNo">204</span>     * @param reader XML reader<a name="line.204"></a>
<span class="sourceLineNo">205</span>     * @return the number of objects read<a name="line.205"></a>
<span class="sourceLineNo">206</span>     * @throws XMLStreamException if an error occurs<a name="line.206"></a>
<span class="sourceLineNo">207</span>     * @throws IllegalArgumentException if {@code reader} is null<a name="line.207"></a>
<span class="sourceLineNo">208</span>     */<a name="line.208"></a>
<span class="sourceLineNo">209</span>    @SuppressWarnings("unchecked")<a name="line.209"></a>
<span class="sourceLineNo">210</span>    public int read(XMLStreamReader reader) throws XMLStreamException {<a name="line.210"></a>
<span class="sourceLineNo">211</span>        if (reader == null)<a name="line.211"></a>
<span class="sourceLineNo">212</span>            throw new IllegalArgumentException("null reader");<a name="line.212"></a>
<span class="sourceLineNo">213</span>        this.expect(reader, false, OBJECTS_TAG);<a name="line.213"></a>
<span class="sourceLineNo">214</span><a name="line.214"></a>
<span class="sourceLineNo">215</span>        // Create a snapshot transaction so we can replace objects without triggering DeleteAction's<a name="line.215"></a>
<span class="sourceLineNo">216</span>        final SnapshotTransaction snapshot = this.tx.createSnapshotTransaction();<a name="line.216"></a>
<span class="sourceLineNo">217</span><a name="line.217"></a>
<span class="sourceLineNo">218</span>        // Iterate over objects<a name="line.218"></a>
<span class="sourceLineNo">219</span>        QName name;<a name="line.219"></a>
<span class="sourceLineNo">220</span>        int count;<a name="line.220"></a>
<span class="sourceLineNo">221</span>        for (count = 0; (name = this.next(reader)) != null; count++) {<a name="line.221"></a>
<span class="sourceLineNo">222</span><a name="line.222"></a>
<span class="sourceLineNo">223</span>            // Determine schema version<a name="line.223"></a>
<span class="sourceLineNo">224</span>            final String versionAttr = this.getAttr(reader, VERSION_ATTR, false);<a name="line.224"></a>
<span class="sourceLineNo">225</span>            final Schema schema;<a name="line.225"></a>
<span class="sourceLineNo">226</span>            if (versionAttr != null) {<a name="line.226"></a>
<span class="sourceLineNo">227</span>                try {<a name="line.227"></a>
<span class="sourceLineNo">228</span>                    schema = this.tx.getSchemas().getVersion(Integer.parseInt(versionAttr));<a name="line.228"></a>
<span class="sourceLineNo">229</span>                } catch (IllegalArgumentException e) {<a name="line.229"></a>
<span class="sourceLineNo">230</span>                    throw new XMLStreamException("invalid object schema version `" + versionAttr + "': " + e,<a name="line.230"></a>
<span class="sourceLineNo">231</span>                      reader.getLocation(), e);<a name="line.231"></a>
<span class="sourceLineNo">232</span>                }<a name="line.232"></a>
<span class="sourceLineNo">233</span>            } else<a name="line.233"></a>
<span class="sourceLineNo">234</span>                schema = this.tx.getSchema();<a name="line.234"></a>
<span class="sourceLineNo">235</span>            final NameIndex nameIndex = this.nameIndexMap.get(schema.getVersionNumber());<a name="line.235"></a>
<span class="sourceLineNo">236</span>            final SchemaModel schemaModel = schema.getSchemaModel();<a name="line.236"></a>
<span class="sourceLineNo">237</span><a name="line.237"></a>
<span class="sourceLineNo">238</span>            // Determine object type<a name="line.238"></a>
<span class="sourceLineNo">239</span>            String storageIdAttr = this.getAttr(reader, STORAGE_ID_ATTR, false);<a name="line.239"></a>
<span class="sourceLineNo">240</span>            ObjType objType = null;<a name="line.240"></a>
<span class="sourceLineNo">241</span>            if (storageIdAttr != null) {<a name="line.241"></a>
<span class="sourceLineNo">242</span>                try {<a name="line.242"></a>
<span class="sourceLineNo">243</span>                    objType = schema.getObjType(Integer.parseInt(storageIdAttr));<a name="line.243"></a>
<span class="sourceLineNo">244</span>                } catch (UnknownTypeException e) {<a name="line.244"></a>
<span class="sourceLineNo">245</span>                    throw new XMLStreamException("invalid object type storage ID `" + storageIdAttr + "': " + e,<a name="line.245"></a>
<span class="sourceLineNo">246</span>                      reader.getLocation(), e);<a name="line.246"></a>
<span class="sourceLineNo">247</span>                }<a name="line.247"></a>
<span class="sourceLineNo">248</span>                if (!name.equals(OBJECT_TAG)) {<a name="line.248"></a>
<span class="sourceLineNo">249</span>                    if (!XMLConstants.NULL_NS_URI.equals(name.getNamespaceURI())) {<a name="line.249"></a>
<span class="sourceLineNo">250</span>                        throw new XMLStreamException("unexpected element &lt;" + name.getPrefix() + ":"<a name="line.250"></a>
<span class="sourceLineNo">251</span>                          + name.getLocalPart() + "&gt;; expected &lt;" + OBJECT_TAG.getLocalPart() + "&gt;", reader.getLocation());<a name="line.251"></a>
<span class="sourceLineNo">252</span>                    }<a name="line.252"></a>
<span class="sourceLineNo">253</span>                    if (!objType.getName().equals(name.getLocalPart())) {<a name="line.253"></a>
<span class="sourceLineNo">254</span>                        throw new XMLStreamException("element &lt;" + name.getLocalPart() + "&gt; does not match storage ID "<a name="line.254"></a>
<span class="sourceLineNo">255</span>                          + objType.getStorageId() + "; should be &lt;" + objType.getName() + "&gt;", reader.getLocation());<a name="line.255"></a>
<span class="sourceLineNo">256</span>                    }<a name="line.256"></a>
<span class="sourceLineNo">257</span>                }<a name="line.257"></a>
<span class="sourceLineNo">258</span>            } else {<a name="line.258"></a>
<span class="sourceLineNo">259</span>                if (!XMLConstants.NULL_NS_URI.equals(name.getNamespaceURI())) {<a name="line.259"></a>
<span class="sourceLineNo">260</span>                    throw new XMLStreamException("unexpected element &lt;" + name.getPrefix() + ":"<a name="line.260"></a>
<span class="sourceLineNo">261</span>                      + name.getLocalPart() + "&gt;; expected &lt;object&gt; or object type name", reader.getLocation());<a name="line.261"></a>
<span class="sourceLineNo">262</span>                }<a name="line.262"></a>
<span class="sourceLineNo">263</span>                if (!name.equals(OBJECT_TAG)) {<a name="line.263"></a>
<span class="sourceLineNo">264</span>                    final SchemaObjectType schemaObjectType = nameIndex.getSchemaObjectType(name.getLocalPart());<a name="line.264"></a>
<span class="sourceLineNo">265</span>                    if (schemaObjectType == null) {<a name="line.265"></a>
<span class="sourceLineNo">266</span>                        throw new XMLStreamException("unexpected element &lt;" + name.getLocalPart()<a name="line.266"></a>
<span class="sourceLineNo">267</span>                          + "&gt;; no object type named `" + name.getLocalPart() + "' found in schema version "<a name="line.267"></a>
<span class="sourceLineNo">268</span>                          + schema.getVersionNumber(), reader.getLocation());<a name="line.268"></a>
<span class="sourceLineNo">269</span>                    }<a name="line.269"></a>
<span class="sourceLineNo">270</span>                    objType = schema.getObjType(schemaObjectType.getStorageId());<a name="line.270"></a>
<span class="sourceLineNo">271</span>                }<a name="line.271"></a>
<span class="sourceLineNo">272</span>            }<a name="line.272"></a>
<span class="sourceLineNo">273</span><a name="line.273"></a>
<span class="sourceLineNo">274</span>            // Reset snapshot<a name="line.274"></a>
<span class="sourceLineNo">275</span>            snapshot.reset();<a name="line.275"></a>
<span class="sourceLineNo">276</span><a name="line.276"></a>
<span class="sourceLineNo">277</span>            // Determine object ID and create object in snapshot<a name="line.277"></a>
<span class="sourceLineNo">278</span>            final String idAttr = this.getAttr(reader, ID_ATTR, true);<a name="line.278"></a>
<span class="sourceLineNo">279</span>            ObjId id;<a name="line.279"></a>
<span class="sourceLineNo">280</span>            if (idAttr == null) {<a name="line.280"></a>
<span class="sourceLineNo">281</span><a name="line.281"></a>
<span class="sourceLineNo">282</span>                // Verify we know object type<a name="line.282"></a>
<span class="sourceLineNo">283</span>                if (objType == null) {<a name="line.283"></a>
<span class="sourceLineNo">284</span>                    throw new XMLStreamException("invalid &lt;" + OBJECT_TAG.getLocalPart() + "&gt; element: either \""<a name="line.284"></a>
<span class="sourceLineNo">285</span>                      + STORAGE_ID_ATTR.getLocalPart() + "\" or \"" + ID_ATTR.getLocalPart() + "\" attribute is required",<a name="line.285"></a>
<span class="sourceLineNo">286</span>                      reader.getLocation());<a name="line.286"></a>
<span class="sourceLineNo">287</span>                }<a name="line.287"></a>
<span class="sourceLineNo">288</span><a name="line.288"></a>
<span class="sourceLineNo">289</span>                // Create object<a name="line.289"></a>
<span class="sourceLineNo">290</span>                id = snapshot.create(objType.getStorageId(), schema.getVersionNumber());<a name="line.290"></a>
<span class="sourceLineNo">291</span>            } else {<a name="line.291"></a>
<span class="sourceLineNo">292</span><a name="line.292"></a>
<span class="sourceLineNo">293</span>                // Parse id<a name="line.293"></a>
<span class="sourceLineNo">294</span>                try {<a name="line.294"></a>
<span class="sourceLineNo">295</span>                    id = new ObjId(idAttr);<a name="line.295"></a>
<span class="sourceLineNo">296</span>                } catch (IllegalArgumentException e) {<a name="line.296"></a>
<span class="sourceLineNo">297</span>                    final Matcher matcher = GENERATED_ID_PATTERN.matcher(idAttr);<a name="line.297"></a>
<span class="sourceLineNo">298</span>                    if (!matcher.matches())<a name="line.298"></a>
<span class="sourceLineNo">299</span>                        throw new XMLStreamException("invalid object ID `" + idAttr + "'", reader.getLocation());<a name="line.299"></a>
<span class="sourceLineNo">300</span>                    final String typeAttr = matcher.group(1);<a name="line.300"></a>
<span class="sourceLineNo">301</span>                    final ObjType genType = this.parseGeneratedType(reader, idAttr, typeAttr, schema);<a name="line.301"></a>
<span class="sourceLineNo">302</span>                    if (objType == null)<a name="line.302"></a>
<span class="sourceLineNo">303</span>                        objType = genType;<a name="line.303"></a>
<span class="sourceLineNo">304</span>                    else if (!genType.equals(objType)) {<a name="line.304"></a>
<span class="sourceLineNo">305</span>                        throw new XMLStreamException("type `" + typeAttr + "' in generated object ID `" + idAttr<a name="line.305"></a>
<span class="sourceLineNo">306</span>                          + "' does not match type `" + objType.getName() + "' in schema version "<a name="line.306"></a>
<span class="sourceLineNo">307</span>                          + schema.getVersionNumber(), reader.getLocation());<a name="line.307"></a>
<span class="sourceLineNo">308</span>                    }<a name="line.308"></a>
<span class="sourceLineNo">309</span>                    id = this.generatedIdCache.getGeneratedId(this.tx, objType.getStorageId(), matcher.group(2));<a name="line.309"></a>
<span class="sourceLineNo">310</span>                }<a name="line.310"></a>
<span class="sourceLineNo">311</span><a name="line.311"></a>
<span class="sourceLineNo">312</span>                // Create object<a name="line.312"></a>
<span class="sourceLineNo">313</span>                snapshot.create(id, schema.getVersionNumber());<a name="line.313"></a>
<span class="sourceLineNo">314</span>            }<a name="line.314"></a>
<span class="sourceLineNo">315</span><a name="line.315"></a>
<span class="sourceLineNo">316</span>            // Iterate over fields<a name="line.316"></a>
<span class="sourceLineNo">317</span>            final SchemaObjectType schemaObjectType = schemaModel.getSchemaObjectTypes().get(objType.getStorageId());<a name="line.317"></a>
<span class="sourceLineNo">318</span>            while ((name = this.next(reader)) != null) {<a name="line.318"></a>
<span class="sourceLineNo">319</span>                final QName fieldTagName = name;<a name="line.319"></a>
<span class="sourceLineNo">320</span><a name="line.320"></a>
<span class="sourceLineNo">321</span>                // Determine the field<a name="line.321"></a>
<span class="sourceLineNo">322</span>                storageIdAttr = this.getAttr(reader, STORAGE_ID_ATTR, false);<a name="line.322"></a>
<span class="sourceLineNo">323</span>                final Field&lt;?&gt; field;<a name="line.323"></a>
<span class="sourceLineNo">324</span>                if (storageIdAttr != null) {<a name="line.324"></a>
<span class="sourceLineNo">325</span>                    try {<a name="line.325"></a>
<span class="sourceLineNo">326</span>                        field = objType.getFields().get(Integer.parseInt(storageIdAttr));<a name="line.326"></a>
<span class="sourceLineNo">327</span>                    } catch (IllegalArgumentException e) {<a name="line.327"></a>
<span class="sourceLineNo">328</span>                        throw new XMLStreamException("invalid field storage ID `" + storageIdAttr<a name="line.328"></a>
<span class="sourceLineNo">329</span>                          + "': " + e, reader.getLocation(), e);<a name="line.329"></a>
<span class="sourceLineNo">330</span>                    }<a name="line.330"></a>
<span class="sourceLineNo">331</span>                    if (field == null) {<a name="line.331"></a>
<span class="sourceLineNo">332</span>                        throw new XMLStreamException("unknown field storage ID `" + storageIdAttr + "' for object type `"<a name="line.332"></a>
<span class="sourceLineNo">333</span>                          + objType.getName() + "' #" + objType.getStorageId() + " in schema version "<a name="line.333"></a>
<span class="sourceLineNo">334</span>                          + schema.getVersionNumber(), reader.getLocation());<a name="line.334"></a>
<span class="sourceLineNo">335</span>                    }<a name="line.335"></a>
<span class="sourceLineNo">336</span>                } else {<a name="line.336"></a>
<span class="sourceLineNo">337</span>                    if (!XMLConstants.NULL_NS_URI.equals(name.getNamespaceURI())) {<a name="line.337"></a>
<span class="sourceLineNo">338</span>                        throw new XMLStreamException("unexpected element &lt;" + name.getPrefix() + ":"<a name="line.338"></a>
<span class="sourceLineNo">339</span>                          + name.getLocalPart() + "&gt;; expected field name", reader.getLocation());<a name="line.339"></a>
<span class="sourceLineNo">340</span>                    }<a name="line.340"></a>
<span class="sourceLineNo">341</span>                    final SchemaField schemaField = nameIndex.getSchemaField(schemaObjectType, name.getLocalPart());<a name="line.341"></a>
<span class="sourceLineNo">342</span>                    if (schemaField == null) {<a name="line.342"></a>
<span class="sourceLineNo">343</span>                        throw new XMLStreamException("unexpected element &lt;" + name.getLocalPart() + "&gt;; unknown field `"<a name="line.343"></a>
<span class="sourceLineNo">344</span>                          + name.getLocalPart() + "' in object type `" + objType.getName() + "' #"<a name="line.344"></a>
<span class="sourceLineNo">345</span>                          + objType.getStorageId() + " in schema version " + schema.getVersionNumber(),<a name="line.345"></a>
<span class="sourceLineNo">346</span>                          reader.getLocation());<a name="line.346"></a>
<span class="sourceLineNo">347</span>                    }<a name="line.347"></a>
<span class="sourceLineNo">348</span>                    field = objType.getFields().get(schemaField.getStorageId());<a name="line.348"></a>
<span class="sourceLineNo">349</span>                    assert field != null : "field=" + schemaField + " fields=" + objType.getFields();<a name="line.349"></a>
<span class="sourceLineNo">350</span>                }<a name="line.350"></a>
<span class="sourceLineNo">351</span><a name="line.351"></a>
<span class="sourceLineNo">352</span>                // Parse the field<a name="line.352"></a>
<span class="sourceLineNo">353</span>                if (field instanceof SimpleField)<a name="line.353"></a>
<span class="sourceLineNo">354</span>                    snapshot.writeSimpleField(id, field.getStorageId(), this.readSimpleField(reader, (SimpleField&lt;?&gt;)field), false);<a name="line.354"></a>
<span class="sourceLineNo">355</span>                else if (field instanceof CounterField) {<a name="line.355"></a>
<span class="sourceLineNo">356</span>                    final long value;<a name="line.356"></a>
<span class="sourceLineNo">357</span>                    try {<a name="line.357"></a>
<span class="sourceLineNo">358</span>                        value = Long.parseLong(reader.getElementText());<a name="line.358"></a>
<span class="sourceLineNo">359</span>                    } catch (Exception e) {<a name="line.359"></a>
<span class="sourceLineNo">360</span>                        throw new XMLStreamException("invalid counter value for field `" + field.getName() + "': " + e,<a name="line.360"></a>
<span class="sourceLineNo">361</span>                          reader.getLocation(), e);<a name="line.361"></a>
<span class="sourceLineNo">362</span>                    }<a name="line.362"></a>
<span class="sourceLineNo">363</span>                    snapshot.writeCounterField(id, field.getStorageId(), value, false);<a name="line.363"></a>
<span class="sourceLineNo">364</span>                } else if (field instanceof CollectionField) {<a name="line.364"></a>
<span class="sourceLineNo">365</span>                    final SimpleField&lt;?&gt; elementField = ((CollectionField&lt;?, ?&gt;)field).getElementField();<a name="line.365"></a>
<span class="sourceLineNo">366</span>                    final Collection&lt;?&gt; collection;<a name="line.366"></a>
<span class="sourceLineNo">367</span>                    if (field instanceof SetField)<a name="line.367"></a>
<span class="sourceLineNo">368</span>                        collection = snapshot.readSetField(id, field.getStorageId(), false);<a name="line.368"></a>
<span class="sourceLineNo">369</span>                    else if (field instanceof ListField)<a name="line.369"></a>
<span class="sourceLineNo">370</span>                        collection = snapshot.readListField(id, field.getStorageId(), false);<a name="line.370"></a>
<span class="sourceLineNo">371</span>                    else<a name="line.371"></a>
<span class="sourceLineNo">372</span>                        throw new RuntimeException("internal error: " + field);<a name="line.372"></a>
<span class="sourceLineNo">373</span>                    while ((name = this.next(reader)) != null) {<a name="line.373"></a>
<span class="sourceLineNo">374</span>                        if (!ELEMENT_TAG.equals(name)) {<a name="line.374"></a>
<span class="sourceLineNo">375</span>                            throw new XMLStreamException("invalid field element; expected &lt;" + ELEMENT_TAG.getLocalPart()<a name="line.375"></a>
<span class="sourceLineNo">376</span>                              + "&gt; but found opening &lt;" + name.getLocalPart() + "&gt;", reader.getLocation());<a name="line.376"></a>
<span class="sourceLineNo">377</span>                        }<a name="line.377"></a>
<span class="sourceLineNo">378</span>                        ((Collection&lt;Object&gt;)collection).add(this.readSimpleField(reader, elementField));<a name="line.378"></a>
<span class="sourceLineNo">379</span>                    }<a name="line.379"></a>
<span class="sourceLineNo">380</span>                } else if (field instanceof MapField) {<a name="line.380"></a>
<span class="sourceLineNo">381</span>                    final SimpleField&lt;?&gt; keyField = ((MapField&lt;?, ?&gt;)field).getKeyField();<a name="line.381"></a>
<span class="sourceLineNo">382</span>                    final SimpleField&lt;?&gt; valueField = ((MapField&lt;?, ?&gt;)field).getValueField();<a name="line.382"></a>
<span class="sourceLineNo">383</span>                    final Map&lt;?, ?&gt; map = snapshot.readMapField(id, field.getStorageId(), false);<a name="line.383"></a>
<span class="sourceLineNo">384</span>                    while ((name = this.next(reader)) != null) {<a name="line.384"></a>
<span class="sourceLineNo">385</span>                        if (!ENTRY_TAG.equals(name)) {<a name="line.385"></a>
<span class="sourceLineNo">386</span>                            throw new XMLStreamException("invalid map field entry; expected &lt;" + ENTRY_TAG.getLocalPart()<a name="line.386"></a>
<span class="sourceLineNo">387</span>                              + "&gt; but found opening &lt;" + name.getLocalPart() + "&gt;", reader.getLocation());<a name="line.387"></a>
<span class="sourceLineNo">388</span>                        }<a name="line.388"></a>
<span class="sourceLineNo">389</span>                        if (!KEY_TAG.equals(this.next(reader))) {<a name="line.389"></a>
<span class="sourceLineNo">390</span>                            throw new XMLStreamException("invalid map entry key; expected &lt;" + KEY_TAG.getLocalPart()<a name="line.390"></a>
<span class="sourceLineNo">391</span>                              + "&gt;", reader.getLocation());<a name="line.391"></a>
<span class="sourceLineNo">392</span>                        }<a name="line.392"></a>
<span class="sourceLineNo">393</span>                        final Object key = this.readSimpleField(reader, keyField);<a name="line.393"></a>
<span class="sourceLineNo">394</span>                        if (!VALUE_TAG.equals(this.next(reader))) {<a name="line.394"></a>
<span class="sourceLineNo">395</span>                            throw new XMLStreamException("invalid map entry value; expected &lt;" + VALUE_TAG.getLocalPart()<a name="line.395"></a>
<span class="sourceLineNo">396</span>                              + "&gt;", reader.getLocation());<a name="line.396"></a>
<span class="sourceLineNo">397</span>                        }<a name="line.397"></a>
<span class="sourceLineNo">398</span>                        final Object value = this.readSimpleField(reader, valueField);<a name="line.398"></a>
<span class="sourceLineNo">399</span>                        ((Map&lt;Object, Object&gt;)map).put(key, value);<a name="line.399"></a>
<span class="sourceLineNo">400</span>                        if ((name = this.next(reader)) != null) {<a name="line.400"></a>
<span class="sourceLineNo">401</span>                            throw new XMLStreamException("invalid map field entry; expected closing &lt;" + ENTRY_TAG.getLocalPart()<a name="line.401"></a>
<span class="sourceLineNo">402</span>                              + "&gt; but found opening &lt;" + name.getLocalPart() + "&gt;", reader.getLocation());<a name="line.402"></a>
<span class="sourceLineNo">403</span>                        }<a name="line.403"></a>
<span class="sourceLineNo">404</span>                    }<a name="line.404"></a>
<span class="sourceLineNo">405</span>                } else<a name="line.405"></a>
<span class="sourceLineNo">406</span>                    throw new RuntimeException("internal error: " + field);<a name="line.406"></a>
<span class="sourceLineNo">407</span>            }<a name="line.407"></a>
<span class="sourceLineNo">408</span><a name="line.408"></a>
<span class="sourceLineNo">409</span>            // Copy over object, replacing any previous<a name="line.409"></a>
<span class="sourceLineNo">410</span>            snapshot.copy(id, id, this.tx, false);<a name="line.410"></a>
<span class="sourceLineNo">411</span>        }<a name="line.411"></a>
<span class="sourceLineNo">412</span><a name="line.412"></a>
<span class="sourceLineNo">413</span>        // Done<a name="line.413"></a>
<span class="sourceLineNo">414</span>        return count;<a name="line.414"></a>
<span class="sourceLineNo">415</span>    }<a name="line.415"></a>
<span class="sourceLineNo">416</span><a name="line.416"></a>
<span class="sourceLineNo">417</span>    /**<a name="line.417"></a>
<span class="sourceLineNo">418</span>     * Export all objects from the {@link Transaction} associated with this instance to the given output.<a name="line.418"></a>
<span class="sourceLineNo">419</span>     *<a name="line.419"></a>
<span class="sourceLineNo">420</span>     * @param output XML output; will not be closed by this method<a name="line.420"></a>
<span class="sourceLineNo">421</span>     * @param nameFormat true for Name Format, false for Storage ID Format<a name="line.421"></a>
<span class="sourceLineNo">422</span>     * @param indent true to indent output, false for all on one line<a name="line.422"></a>
<span class="sourceLineNo">423</span>     * @return the number of objects written<a name="line.423"></a>
<span class="sourceLineNo">424</span>     * @throws XMLStreamException if an error occurs<a name="line.424"></a>
<span class="sourceLineNo">425</span>     * @throws IllegalArgumentException if {@code output} is null<a name="line.425"></a>
<span class="sourceLineNo">426</span>     */<a name="line.426"></a>
<span class="sourceLineNo">427</span>    public int write(OutputStream output, boolean nameFormat, boolean indent) throws XMLStreamException {<a name="line.427"></a>
<span class="sourceLineNo">428</span>        if (output == null)<a name="line.428"></a>
<span class="sourceLineNo">429</span>            throw new IllegalArgumentException("null output");<a name="line.429"></a>
<span class="sourceLineNo">430</span>        XMLStreamWriter xmlWriter = XMLOutputFactory.newInstance().createXMLStreamWriter(output, "UTF-8");<a name="line.430"></a>
<span class="sourceLineNo">431</span>        if (indent)<a name="line.431"></a>
<span class="sourceLineNo">432</span>            xmlWriter = new IndentXMLStreamWriter(xmlWriter);<a name="line.432"></a>
<span class="sourceLineNo">433</span>        xmlWriter.writeStartDocument("UTF-8", "1.0");<a name="line.433"></a>
<span class="sourceLineNo">434</span>        return this.write(xmlWriter, nameFormat);<a name="line.434"></a>
<span class="sourceLineNo">435</span>    }<a name="line.435"></a>
<span class="sourceLineNo">436</span><a name="line.436"></a>
<span class="sourceLineNo">437</span>    /**<a name="line.437"></a>
<span class="sourceLineNo">438</span>     * Export all objects from the {@link Transaction} associated with this instance to the given writer.<a name="line.438"></a>
<span class="sourceLineNo">439</span>     *<a name="line.439"></a>
<span class="sourceLineNo">440</span>     * @param writer XML output; will not be closed by this method<a name="line.440"></a>
<span class="sourceLineNo">441</span>     * @param nameFormat true for Name Format, false for Storage ID Format<a name="line.441"></a>
<span class="sourceLineNo">442</span>     * @param indent true to indent output, false for all on one line<a name="line.442"></a>
<span class="sourceLineNo">443</span>     * @return the number of objects written<a name="line.443"></a>
<span class="sourceLineNo">444</span>     * @throws XMLStreamException if an error occurs<a name="line.444"></a>
<span class="sourceLineNo">445</span>     * @throws IllegalArgumentException if {@code writer} is null<a name="line.445"></a>
<span class="sourceLineNo">446</span>     */<a name="line.446"></a>
<span class="sourceLineNo">447</span>    public int write(Writer writer, boolean nameFormat, boolean indent) throws XMLStreamException {<a name="line.447"></a>
<span class="sourceLineNo">448</span>        if (writer == null)<a name="line.448"></a>
<span class="sourceLineNo">449</span>            throw new IllegalArgumentException("null writer");<a name="line.449"></a>
<span class="sourceLineNo">450</span>        XMLStreamWriter xmlWriter = XMLOutputFactory.newInstance().createXMLStreamWriter(writer);<a name="line.450"></a>
<span class="sourceLineNo">451</span>        if (indent)<a name="line.451"></a>
<span class="sourceLineNo">452</span>            xmlWriter = new IndentXMLStreamWriter(xmlWriter);<a name="line.452"></a>
<span class="sourceLineNo">453</span>        xmlWriter.writeStartDocument("1.0");<a name="line.453"></a>
<span class="sourceLineNo">454</span>        return this.write(xmlWriter, nameFormat);<a name="line.454"></a>
<span class="sourceLineNo">455</span>    }<a name="line.455"></a>
<span class="sourceLineNo">456</span><a name="line.456"></a>
<span class="sourceLineNo">457</span>    private int write(XMLStreamWriter writer, boolean nameFormat) throws XMLStreamException {<a name="line.457"></a>
<span class="sourceLineNo">458</span><a name="line.458"></a>
<span class="sourceLineNo">459</span>        // Gather all known object storage IDs<a name="line.459"></a>
<span class="sourceLineNo">460</span>        final TreeSet&lt;Integer&gt; storageIds = new TreeSet&lt;&gt;();<a name="line.460"></a>
<span class="sourceLineNo">461</span>        for (Schema schema : this.tx.getSchemas().getVersions().values())<a name="line.461"></a>
<span class="sourceLineNo">462</span>            storageIds.addAll(schema.getSchemaModel().getSchemaObjectTypes().keySet());<a name="line.462"></a>
<span class="sourceLineNo">463</span><a name="line.463"></a>
<span class="sourceLineNo">464</span>        // Get corresponding iterators<a name="line.464"></a>
<span class="sourceLineNo">465</span>        final ArrayList&lt;NavigableSet&lt;ObjId&gt;&gt; sets = new ArrayList&lt;&gt;(storageIds.size());<a name="line.465"></a>
<span class="sourceLineNo">466</span>        for (int storageId : storageIds)<a name="line.466"></a>
<span class="sourceLineNo">467</span>            sets.add(this.tx.getAll(storageId));<a name="line.467"></a>
<span class="sourceLineNo">468</span><a name="line.468"></a>
<span class="sourceLineNo">469</span>        // Output all objects<a name="line.469"></a>
<span class="sourceLineNo">470</span>        return this.write(writer, nameFormat, Iterables.concat(sets));<a name="line.470"></a>
<span class="sourceLineNo">471</span>    }<a name="line.471"></a>
<span class="sourceLineNo">472</span><a name="line.472"></a>
<span class="sourceLineNo">473</span>    /**<a name="line.473"></a>
<span class="sourceLineNo">474</span>     * Export the given objects from the {@link Transaction} associated with this instance to the given XML output.<a name="line.474"></a>
<span class="sourceLineNo">475</span>     *<a name="line.475"></a>
<span class="sourceLineNo">476</span>     * &lt;p&gt;<a name="line.476"></a>
<span class="sourceLineNo">477</span>     * This method writes a start element as its first action, allowing the output to be embedded into a larger XML document.<a name="line.477"></a>
<span class="sourceLineNo">478</span>     * Callers not embedding the output may with to precede invocation of this method with a call to<a name="line.478"></a>
<span class="sourceLineNo">479</span>     * {@link XMLStreamWriter#writeStartDocument writer.writeStartDocument()}.<a name="line.479"></a>
<span class="sourceLineNo">480</span>     * &lt;/p&gt;<a name="line.480"></a>
<span class="sourceLineNo">481</span>     *<a name="line.481"></a>
<span class="sourceLineNo">482</span>     * @param writer XML writer; will not be closed by this method<a name="line.482"></a>
<span class="sourceLineNo">483</span>     * @param nameFormat true for Name Format, false for Storage ID Format<a name="line.483"></a>
<span class="sourceLineNo">484</span>     * @param objIds object IDs<a name="line.484"></a>
<span class="sourceLineNo">485</span>     * @return the number of objects written<a name="line.485"></a>
<span class="sourceLineNo">486</span>     * @throws XMLStreamException if an error occurs<a name="line.486"></a>
<span class="sourceLineNo">487</span>     * @throws IllegalArgumentException if {@code writer} is null<a name="line.487"></a>
<span class="sourceLineNo">488</span>     */<a name="line.488"></a>
<span class="sourceLineNo">489</span>    public int write(XMLStreamWriter writer, boolean nameFormat, Iterable&lt;? extends ObjId&gt; objIds) throws XMLStreamException {<a name="line.489"></a>
<span class="sourceLineNo">490</span>        if (writer == null)<a name="line.490"></a>
<span class="sourceLineNo">491</span>            throw new IllegalArgumentException("null writer");<a name="line.491"></a>
<span class="sourceLineNo">492</span>        if (objIds == null)<a name="line.492"></a>
<span class="sourceLineNo">493</span>            throw new IllegalArgumentException("null objIds");<a name="line.493"></a>
<span class="sourceLineNo">494</span>        final NameComparator nameComparator = new NameComparator();<a name="line.494"></a>
<span class="sourceLineNo">495</span>        writer.setDefaultNamespace(OBJECTS_TAG.getNamespaceURI());<a name="line.495"></a>
<span class="sourceLineNo">496</span>        writer.writeStartElement(OBJECTS_TAG.getNamespaceURI(), OBJECTS_TAG.getLocalPart());<a name="line.496"></a>
<span class="sourceLineNo">497</span>        int count = 0;<a name="line.497"></a>
<span class="sourceLineNo">498</span>        for (ObjId id : objIds) {<a name="line.498"></a>
<span class="sourceLineNo">499</span><a name="line.499"></a>
<span class="sourceLineNo">500</span>            // Get object info<a name="line.500"></a>
<span class="sourceLineNo">501</span>            final int typeStorageId = id.getStorageId();<a name="line.501"></a>
<span class="sourceLineNo">502</span>            final int version = this.tx.getSchemaVersion(id);<a name="line.502"></a>
<span class="sourceLineNo">503</span>            final Schema schema = this.tx.getSchemas().getVersion(version);<a name="line.503"></a>
<span class="sourceLineNo">504</span>            final ObjType objType = schema.getObjType(typeStorageId);<a name="line.504"></a>
<span class="sourceLineNo">505</span><a name="line.505"></a>
<span class="sourceLineNo">506</span>            // Get format info<a name="line.506"></a>
<span class="sourceLineNo">507</span>            final QName objectElement = nameFormat ? new QName(objType.getName()) : OBJECT_TAG;<a name="line.507"></a>
<span class="sourceLineNo">508</span>            final int storageIdAttr = nameFormat ? -1 : typeStorageId;<a name="line.508"></a>
<span class="sourceLineNo">509</span><a name="line.509"></a>
<span class="sourceLineNo">510</span>            // Output fields; if all are default, output empty tag<a name="line.510"></a>
<span class="sourceLineNo">511</span>            boolean tagOutput = false;<a name="line.511"></a>
<span class="sourceLineNo">512</span>            ArrayList&lt;Field&lt;?&gt;&gt; fieldList = new ArrayList&lt;&gt;(objType.getFields().values());<a name="line.512"></a>
<span class="sourceLineNo">513</span>            if (nameFormat)<a name="line.513"></a>
<span class="sourceLineNo">514</span>                Collections.sort(fieldList, nameComparator);<a name="line.514"></a>
<span class="sourceLineNo">515</span>            for (Field&lt;?&gt; field : fieldList) {<a name="line.515"></a>
<span class="sourceLineNo">516</span><a name="line.516"></a>
<span class="sourceLineNo">517</span>                // Determine if field equals its default value; if so, skip it<a name="line.517"></a>
<span class="sourceLineNo">518</span>                if (field.hasDefaultValue(this.tx, id))<a name="line.518"></a>
<span class="sourceLineNo">519</span>                    continue;<a name="line.519"></a>
<span class="sourceLineNo">520</span><a name="line.520"></a>
<span class="sourceLineNo">521</span>                // Output &lt;object&gt; opening tag if not output yet<a name="line.521"></a>
<span class="sourceLineNo">522</span>                if (!tagOutput) {<a name="line.522"></a>
<span class="sourceLineNo">523</span>                    this.writeOpenTag(writer, false, objectElement, storageIdAttr, id, version);<a name="line.523"></a>
<span class="sourceLineNo">524</span>                    tagOutput = true;<a name="line.524"></a>
<span class="sourceLineNo">525</span>                }<a name="line.525"></a>
<span class="sourceLineNo">526</span><a name="line.526"></a>
<span class="sourceLineNo">527</span>                // Get tag name<a name="line.527"></a>
<span class="sourceLineNo">528</span>                final QName fieldTag = nameFormat ? new QName(field.getName()) : FIELD_TAG;<a name="line.528"></a>
<span class="sourceLineNo">529</span><a name="line.529"></a>
<span class="sourceLineNo">530</span>                // Special case for simple fields, which use empty tags when null<a name="line.530"></a>
<span class="sourceLineNo">531</span>                if (field instanceof SimpleField) {<a name="line.531"></a>
<span class="sourceLineNo">532</span>                    final Object value = this.tx.readSimpleField(id, field.getStorageId(), false);<a name="line.532"></a>
<span class="sourceLineNo">533</span>                    if (value != null)<a name="line.533"></a>
<span class="sourceLineNo">534</span>                        writer.writeStartElement(fieldTag.getNamespaceURI(), fieldTag.getLocalPart());<a name="line.534"></a>
<span class="sourceLineNo">535</span>                    else<a name="line.535"></a>
<span class="sourceLineNo">536</span>                        writer.writeEmptyElement(fieldTag.getNamespaceURI(), fieldTag.getLocalPart());<a name="line.536"></a>
<span class="sourceLineNo">537</span>                    if (!nameFormat)<a name="line.537"></a>
<span class="sourceLineNo">538</span>                        this.writeAttribute(writer, STORAGE_ID_ATTR, field.getStorageId());<a name="line.538"></a>
<span class="sourceLineNo">539</span>                    if (value != null) {<a name="line.539"></a>
<span class="sourceLineNo">540</span>                        this.writeSimpleField(writer, (SimpleField&lt;?&gt;)field, value);<a name="line.540"></a>
<span class="sourceLineNo">541</span>                        writer.writeEndElement();<a name="line.541"></a>
<span class="sourceLineNo">542</span>                    } else<a name="line.542"></a>
<span class="sourceLineNo">543</span>                        this.writeAttribute(writer, NULL_ATTR, "true");<a name="line.543"></a>
<span class="sourceLineNo">544</span>                    continue;<a name="line.544"></a>
<span class="sourceLineNo">545</span>                }<a name="line.545"></a>
<span class="sourceLineNo">546</span><a name="line.546"></a>
<span class="sourceLineNo">547</span>                // Output field opening tag<a name="line.547"></a>
<span class="sourceLineNo">548</span>                writer.writeStartElement(fieldTag.getNamespaceURI(), fieldTag.getLocalPart());<a name="line.548"></a>
<span class="sourceLineNo">549</span>                if (!nameFormat)<a name="line.549"></a>
<span class="sourceLineNo">550</span>                    this.writeAttribute(writer, STORAGE_ID_ATTR, field.getStorageId());<a name="line.550"></a>
<span class="sourceLineNo">551</span><a name="line.551"></a>
<span class="sourceLineNo">552</span>                // Output field value<a name="line.552"></a>
<span class="sourceLineNo">553</span>                if (field instanceof CounterField)<a name="line.553"></a>
<span class="sourceLineNo">554</span>                    writer.writeCharacters("" + this.tx.readCounterField(id, field.getStorageId(), false));<a name="line.554"></a>
<span class="sourceLineNo">555</span>                else if (field instanceof CollectionField) {<a name="line.555"></a>
<span class="sourceLineNo">556</span>                    final SimpleField&lt;?&gt; elementField = ((CollectionField&lt;?, ?&gt;)field).getElementField();<a name="line.556"></a>
<span class="sourceLineNo">557</span>                    final Iterable&lt;?&gt; collection = field instanceof SetField ?<a name="line.557"></a>
<span class="sourceLineNo">558</span>                      this.tx.readSetField(id, field.getStorageId(), false) :<a name="line.558"></a>
<span class="sourceLineNo">559</span>                      this.tx.readListField(id, field.getStorageId(), false);<a name="line.559"></a>
<span class="sourceLineNo">560</span>                    for (Object element : collection)<a name="line.560"></a>
<span class="sourceLineNo">561</span>                        this.writeSimpleTag(writer, ELEMENT_TAG, elementField, element);<a name="line.561"></a>
<span class="sourceLineNo">562</span>                } else if (field instanceof MapField) {<a name="line.562"></a>
<span class="sourceLineNo">563</span>                    final SimpleField&lt;?&gt; keyField = ((MapField&lt;?, ?&gt;)field).getKeyField();<a name="line.563"></a>
<span class="sourceLineNo">564</span>                    final SimpleField&lt;?&gt; valueField = ((MapField&lt;?, ?&gt;)field).getValueField();<a name="line.564"></a>
<span class="sourceLineNo">565</span>                    for (Map.Entry&lt;?, ?&gt; entry : this.tx.readMapField(id, field.getStorageId(), false).entrySet()) {<a name="line.565"></a>
<span class="sourceLineNo">566</span>                        writer.writeStartElement(ENTRY_TAG.getNamespaceURI(), ENTRY_TAG.getLocalPart());<a name="line.566"></a>
<span class="sourceLineNo">567</span>                        this.writeSimpleTag(writer, KEY_TAG, keyField, entry.getKey());<a name="line.567"></a>
<span class="sourceLineNo">568</span>                        this.writeSimpleTag(writer, VALUE_TAG, valueField, entry.getValue());<a name="line.568"></a>
<span class="sourceLineNo">569</span>                        writer.writeEndElement();<a name="line.569"></a>
<span class="sourceLineNo">570</span>                    }<a name="line.570"></a>
<span class="sourceLineNo">571</span>                } else<a name="line.571"></a>
<span class="sourceLineNo">572</span>                    throw new RuntimeException("internal error: " + field);<a name="line.572"></a>
<span class="sourceLineNo">573</span><a name="line.573"></a>
<span class="sourceLineNo">574</span>                // Output field closing tag<a name="line.574"></a>
<span class="sourceLineNo">575</span>                writer.writeEndElement();<a name="line.575"></a>
<span class="sourceLineNo">576</span>            }<a name="line.576"></a>
<span class="sourceLineNo">577</span><a name="line.577"></a>
<span class="sourceLineNo">578</span>            // Output empty opening tag if not output yet, otherwise closing tag<a name="line.578"></a>
<span class="sourceLineNo">579</span>            if (!tagOutput)<a name="line.579"></a>
<span class="sourceLineNo">580</span>                this.writeOpenTag(writer, true, objectElement, storageIdAttr, id, version);<a name="line.580"></a>
<span class="sourceLineNo">581</span>            else<a name="line.581"></a>
<span class="sourceLineNo">582</span>                writer.writeEndElement();<a name="line.582"></a>
<span class="sourceLineNo">583</span>            count++;<a name="line.583"></a>
<span class="sourceLineNo">584</span>        }<a name="line.584"></a>
<span class="sourceLineNo">585</span><a name="line.585"></a>
<span class="sourceLineNo">586</span>        // Done<a name="line.586"></a>
<span class="sourceLineNo">587</span>        writer.writeEndElement();<a name="line.587"></a>
<span class="sourceLineNo">588</span>        writer.flush();<a name="line.588"></a>
<span class="sourceLineNo">589</span>        return count;<a name="line.589"></a>
<span class="sourceLineNo">590</span>    }<a name="line.590"></a>
<span class="sourceLineNo">591</span><a name="line.591"></a>
<span class="sourceLineNo">592</span>// Internal methods<a name="line.592"></a>
<span class="sourceLineNo">593</span><a name="line.593"></a>
<span class="sourceLineNo">594</span>    private &lt;T&gt; boolean isDefaultValue(SimpleField&lt;T&gt; field, Object value) throws XMLStreamException {<a name="line.594"></a>
<span class="sourceLineNo">595</span>        final ByteWriter writer = new ByteWriter();<a name="line.595"></a>
<span class="sourceLineNo">596</span>        final FieldType&lt;T&gt; fieldType = field.getFieldType();<a name="line.596"></a>
<span class="sourceLineNo">597</span>        fieldType.write(writer, fieldType.validate(value));<a name="line.597"></a>
<span class="sourceLineNo">598</span>        return Arrays.equals(writer.getBytes(), field.getFieldType().getDefaultValue());<a name="line.598"></a>
<span class="sourceLineNo">599</span>    }<a name="line.599"></a>
<span class="sourceLineNo">600</span><a name="line.600"></a>
<span class="sourceLineNo">601</span>    private void writeSimpleTag(XMLStreamWriter writer, QName tag, SimpleField&lt;?&gt; field, Object value)<a name="line.601"></a>
<span class="sourceLineNo">602</span>      throws XMLStreamException {<a name="line.602"></a>
<span class="sourceLineNo">603</span>        if (value != null) {<a name="line.603"></a>
<span class="sourceLineNo">604</span>            writer.writeStartElement(tag.getNamespaceURI(), tag.getLocalPart());<a name="line.604"></a>
<span class="sourceLineNo">605</span>            this.writeSimpleField(writer, field, value);<a name="line.605"></a>
<span class="sourceLineNo">606</span>            writer.writeEndElement();<a name="line.606"></a>
<span class="sourceLineNo">607</span>        } else {<a name="line.607"></a>
<span class="sourceLineNo">608</span>            writer.writeEmptyElement(tag.getNamespaceURI(), tag.getLocalPart());<a name="line.608"></a>
<span class="sourceLineNo">609</span>            this.writeAttribute(writer, NULL_ATTR, "true");<a name="line.609"></a>
<span class="sourceLineNo">610</span>        }<a name="line.610"></a>
<span class="sourceLineNo">611</span>    }<a name="line.611"></a>
<span class="sourceLineNo">612</span><a name="line.612"></a>
<span class="sourceLineNo">613</span>    private &lt;T&gt; void writeSimpleField(XMLStreamWriter writer, SimpleField&lt;T&gt; field, Object value) throws XMLStreamException {<a name="line.613"></a>
<span class="sourceLineNo">614</span>        final FieldType&lt;T&gt; fieldType = field.getFieldType();<a name="line.614"></a>
<span class="sourceLineNo">615</span>        writer.writeCharacters(fieldType.toString(fieldType.validate(value)));<a name="line.615"></a>
<span class="sourceLineNo">616</span>    }<a name="line.616"></a>
<span class="sourceLineNo">617</span><a name="line.617"></a>
<span class="sourceLineNo">618</span>    private &lt;T&gt; T readSimpleField(XMLStreamReader reader, SimpleField&lt;T&gt; field) throws XMLStreamException {<a name="line.618"></a>
<span class="sourceLineNo">619</span><a name="line.619"></a>
<span class="sourceLineNo">620</span>        // Get field type<a name="line.620"></a>
<span class="sourceLineNo">621</span>        final FieldType&lt;T&gt; fieldType = field.getFieldType();<a name="line.621"></a>
<span class="sourceLineNo">622</span><a name="line.622"></a>
<span class="sourceLineNo">623</span>        // Check for null<a name="line.623"></a>
<span class="sourceLineNo">624</span>        final String nullAttr = this.getAttr(reader, NULL_ATTR, false);<a name="line.624"></a>
<span class="sourceLineNo">625</span>        boolean isNull = false;<a name="line.625"></a>
<span class="sourceLineNo">626</span>        if (nullAttr != null) {<a name="line.626"></a>
<span class="sourceLineNo">627</span>            switch (nullAttr) {<a name="line.627"></a>
<span class="sourceLineNo">628</span>            case "true":<a name="line.628"></a>
<span class="sourceLineNo">629</span>            case "false":<a name="line.629"></a>
<span class="sourceLineNo">630</span>                isNull = Boolean.valueOf(nullAttr);<a name="line.630"></a>
<span class="sourceLineNo">631</span>                break;<a name="line.631"></a>
<span class="sourceLineNo">632</span>            default:<a name="line.632"></a>
<span class="sourceLineNo">633</span>                throw new XMLStreamException("invalid value `" + nullAttr + "' for `" + NULL_ATTR.getLocalPart()<a name="line.633"></a>
<span class="sourceLineNo">634</span>                 + "' attribute: value must be \"true\" or \"false\"", reader.getLocation());<a name="line.634"></a>
<span class="sourceLineNo">635</span>            }<a name="line.635"></a>
<span class="sourceLineNo">636</span>        }<a name="line.636"></a>
<span class="sourceLineNo">637</span><a name="line.637"></a>
<span class="sourceLineNo">638</span>        // Get text content<a name="line.638"></a>
<span class="sourceLineNo">639</span>        final String text;<a name="line.639"></a>
<span class="sourceLineNo">640</span>        try {<a name="line.640"></a>
<span class="sourceLineNo">641</span>            text = reader.getElementText();<a name="line.641"></a>
<span class="sourceLineNo">642</span>        } catch (Exception e) {<a name="line.642"></a>
<span class="sourceLineNo">643</span>            throw new XMLStreamException("invalid value for field `" + field.getName() + "': " + e, reader.getLocation(), e);<a name="line.643"></a>
<span class="sourceLineNo">644</span>        }<a name="line.644"></a>
<span class="sourceLineNo">645</span><a name="line.645"></a>
<span class="sourceLineNo">646</span>        // If null, verify there is no text content<a name="line.646"></a>
<span class="sourceLineNo">647</span>        if (isNull) {<a name="line.647"></a>
<span class="sourceLineNo">648</span>            if (text.length() != 0)<a name="line.648"></a>
<span class="sourceLineNo">649</span>                throw new XMLStreamException("text content not allowed for values with null=\"true\"", reader.getLocation());<a name="line.649"></a>
<span class="sourceLineNo">650</span>            return null;<a name="line.650"></a>
<span class="sourceLineNo">651</span>        }<a name="line.651"></a>
<span class="sourceLineNo">652</span><a name="line.652"></a>
<span class="sourceLineNo">653</span>        // Handle generated ID's for reference fields<a name="line.653"></a>
<span class="sourceLineNo">654</span>        if (field instanceof ReferenceField) {<a name="line.654"></a>
<span class="sourceLineNo">655</span>            final Matcher matcher = GENERATED_ID_PATTERN.matcher(text);<a name="line.655"></a>
<span class="sourceLineNo">656</span>            if (matcher.matches()) {<a name="line.656"></a>
<span class="sourceLineNo">657</span>                final int storageId = this.parseGeneratedType(reader, text, matcher.group(1));<a name="line.657"></a>
<span class="sourceLineNo">658</span>                return fieldType.validate(this.generatedIdCache.getGeneratedId(this.tx, storageId, matcher.group(2)));<a name="line.658"></a>
<span class="sourceLineNo">659</span>            }<a name="line.659"></a>
<span class="sourceLineNo">660</span>        }<a name="line.660"></a>
<span class="sourceLineNo">661</span><a name="line.661"></a>
<span class="sourceLineNo">662</span>        // Parse field value<a name="line.662"></a>
<span class="sourceLineNo">663</span>        try {<a name="line.663"></a>
<span class="sourceLineNo">664</span>            return fieldType.fromString(text);<a name="line.664"></a>
<span class="sourceLineNo">665</span>        } catch (Exception e) {<a name="line.665"></a>
<span class="sourceLineNo">666</span>            throw new XMLStreamException("invalid value `" + text + "' for field `" + field.getName() + "': " + e,<a name="line.666"></a>
<span class="sourceLineNo">667</span>              reader.getLocation(), e);<a name="line.667"></a>
<span class="sourceLineNo">668</span>        }<a name="line.668"></a>
<span class="sourceLineNo">669</span>    }<a name="line.669"></a>
<span class="sourceLineNo">670</span><a name="line.670"></a>
<span class="sourceLineNo">671</span>    // Parse a generated ID type found in a reference<a name="line.671"></a>
<span class="sourceLineNo">672</span>    private int parseGeneratedType(XMLStreamReader reader, String text, String attr) throws XMLStreamException {<a name="line.672"></a>
<span class="sourceLineNo">673</span>        int storageId = -1;<a name="line.673"></a>
<span class="sourceLineNo">674</span>        for (Schema schema : this.tx.getSchemas().getVersions().values()) {<a name="line.674"></a>
<span class="sourceLineNo">675</span>            final ObjType objType;<a name="line.675"></a>
<span class="sourceLineNo">676</span>            try {<a name="line.676"></a>
<span class="sourceLineNo">677</span>                objType = this.parseGeneratedType(reader, text, attr, schema);<a name="line.677"></a>
<span class="sourceLineNo">678</span>            } catch (XMLStreamException e) {<a name="line.678"></a>
<span class="sourceLineNo">679</span>                continue;<a name="line.679"></a>
<span class="sourceLineNo">680</span>            }<a name="line.680"></a>
<span class="sourceLineNo">681</span>            if (storageId != -1 &amp;&amp; storageId != objType.getStorageId()) {<a name="line.681"></a>
<span class="sourceLineNo">682</span>                throw new XMLStreamException("invalid object type `" + attr + "' in generated object ID `"<a name="line.682"></a>
<span class="sourceLineNo">683</span>                  + text + "': two or more incompatible object types named `" + attr<a name="line.683"></a>
<span class="sourceLineNo">684</span>                  + "' exist (in different schema versions)", reader.getLocation());<a name="line.684"></a>
<span class="sourceLineNo">685</span>            }<a name="line.685"></a>
<span class="sourceLineNo">686</span>            storageId = objType.getStorageId();<a name="line.686"></a>
<span class="sourceLineNo">687</span>        }<a name="line.687"></a>
<span class="sourceLineNo">688</span>        if (storageId == -1) {<a name="line.688"></a>
<span class="sourceLineNo">689</span>            throw new XMLStreamException("invalid object type `" + attr + "' in generated object ID `"<a name="line.689"></a>
<span class="sourceLineNo">690</span>              + text + "': no such object type found in any schema version", reader.getLocation());<a name="line.690"></a>
<span class="sourceLineNo">691</span>        }<a name="line.691"></a>
<span class="sourceLineNo">692</span>        return storageId;<a name="line.692"></a>
<span class="sourceLineNo">693</span>    }<a name="line.693"></a>
<span class="sourceLineNo">694</span><a name="line.694"></a>
<span class="sourceLineNo">695</span>    // Parse a generated ID type found in an object definition<a name="line.695"></a>
<span class="sourceLineNo">696</span>    private ObjType parseGeneratedType(XMLStreamReader reader, String text, String attr, Schema schema)<a name="line.696"></a>
<span class="sourceLineNo">697</span>      throws XMLStreamException {<a name="line.697"></a>
<span class="sourceLineNo">698</span><a name="line.698"></a>
<span class="sourceLineNo">699</span>        // Try object type name<a name="line.699"></a>
<span class="sourceLineNo">700</span>        final NameIndex nameIndex = this.nameIndexMap.get(schema.getVersionNumber());<a name="line.700"></a>
<span class="sourceLineNo">701</span>        final SchemaObjectType schemaObjectType = nameIndex.getSchemaObjectType(attr);<a name="line.701"></a>
<span class="sourceLineNo">702</span>        if (schemaObjectType != null)<a name="line.702"></a>
<span class="sourceLineNo">703</span>            return schema.getObjType(schemaObjectType.getStorageId());<a name="line.703"></a>
<span class="sourceLineNo">704</span><a name="line.704"></a>
<span class="sourceLineNo">705</span>        // Try storage ID<a name="line.705"></a>
<span class="sourceLineNo">706</span>        final int storageId;<a name="line.706"></a>
<span class="sourceLineNo">707</span>        try {<a name="line.707"></a>
<span class="sourceLineNo">708</span>            storageId = Integer.parseInt(attr);<a name="line.708"></a>
<span class="sourceLineNo">709</span>        } catch (IllegalArgumentException e) {<a name="line.709"></a>
<span class="sourceLineNo">710</span>            throw new XMLStreamException("invalid object type `" + attr + "' in generated object ID `"<a name="line.710"></a>
<span class="sourceLineNo">711</span>              + text + "': no such object type found in schema version " + schema.getVersionNumber(), reader.getLocation());<a name="line.711"></a>
<span class="sourceLineNo">712</span>        }<a name="line.712"></a>
<span class="sourceLineNo">713</span>        try {<a name="line.713"></a>
<span class="sourceLineNo">714</span>            return schema.getObjType(storageId);<a name="line.714"></a>
<span class="sourceLineNo">715</span>        } catch (UnknownTypeException e) {<a name="line.715"></a>
<span class="sourceLineNo">716</span>            throw new XMLStreamException("invalid storage ID " + storageId + " in generated object ID `"<a name="line.716"></a>
<span class="sourceLineNo">717</span>              + text + "': no such object type found in schema version " + schema.getVersionNumber(), reader.getLocation());<a name="line.717"></a>
<span class="sourceLineNo">718</span>        }<a name="line.718"></a>
<span class="sourceLineNo">719</span>    }<a name="line.719"></a>
<span class="sourceLineNo">720</span><a name="line.720"></a>
<span class="sourceLineNo">721</span>    private void writeOpenTag(XMLStreamWriter writer, boolean empty, QName element, int storageId, ObjId id, int version)<a name="line.721"></a>
<span class="sourceLineNo">722</span>      throws XMLStreamException {<a name="line.722"></a>
<span class="sourceLineNo">723</span>        if (empty)<a name="line.723"></a>
<span class="sourceLineNo">724</span>            writer.writeEmptyElement(element.getNamespaceURI(), element.getLocalPart());<a name="line.724"></a>
<span class="sourceLineNo">725</span>        else<a name="line.725"></a>
<span class="sourceLineNo">726</span>            writer.writeStartElement(element.getNamespaceURI(), element.getLocalPart());<a name="line.726"></a>
<span class="sourceLineNo">727</span>        if (storageId != -1)<a name="line.727"></a>
<span class="sourceLineNo">728</span>            this.writeAttribute(writer, STORAGE_ID_ATTR, storageId);<a name="line.728"></a>
<span class="sourceLineNo">729</span>        this.writeAttribute(writer, ID_ATTR, id);<a name="line.729"></a>
<span class="sourceLineNo">730</span>        this.writeAttribute(writer, VERSION_ATTR, version);<a name="line.730"></a>
<span class="sourceLineNo">731</span>    }<a name="line.731"></a>
<span class="sourceLineNo">732</span><a name="line.732"></a>
<span class="sourceLineNo">733</span>    private void writeAttribute(XMLStreamWriter writer, QName attr, Object value) throws XMLStreamException {<a name="line.733"></a>
<span class="sourceLineNo">734</span>        writer.writeAttribute(attr.getNamespaceURI(), attr.getLocalPart(), "" + value);<a name="line.734"></a>
<span class="sourceLineNo">735</span>    }<a name="line.735"></a>
<span class="sourceLineNo">736</span><a name="line.736"></a>
<span class="sourceLineNo">737</span>    private QName next(XMLStreamReader reader) throws XMLStreamException {<a name="line.737"></a>
<span class="sourceLineNo">738</span>        while (true) {<a name="line.738"></a>
<span class="sourceLineNo">739</span>            if (!reader.hasNext())<a name="line.739"></a>
<span class="sourceLineNo">740</span>                throw new XMLStreamException("unexpected end of input", reader.getLocation());<a name="line.740"></a>
<span class="sourceLineNo">741</span>            final int eventType = reader.next();<a name="line.741"></a>
<span class="sourceLineNo">742</span>            if (eventType == XMLStreamConstants.END_ELEMENT)<a name="line.742"></a>
<span class="sourceLineNo">743</span>                return null;<a name="line.743"></a>
<span class="sourceLineNo">744</span>            if (eventType == XMLStreamConstants.START_ELEMENT)<a name="line.744"></a>
<span class="sourceLineNo">745</span>                return reader.getName();<a name="line.745"></a>
<span class="sourceLineNo">746</span>        }<a name="line.746"></a>
<span class="sourceLineNo">747</span>    }<a name="line.747"></a>
<span class="sourceLineNo">748</span><a name="line.748"></a>
<span class="sourceLineNo">749</span>// NameComparator<a name="line.749"></a>
<span class="sourceLineNo">750</span><a name="line.750"></a>
<span class="sourceLineNo">751</span>    private static class NameComparator implements Comparator&lt;SchemaItem&gt; {<a name="line.751"></a>
<span class="sourceLineNo">752</span><a name="line.752"></a>
<span class="sourceLineNo">753</span>        @Override<a name="line.753"></a>
<span class="sourceLineNo">754</span>        public int compare(SchemaItem item1, SchemaItem item2) {<a name="line.754"></a>
<span class="sourceLineNo">755</span>            return item1.getName().compareTo(item2.getName());<a name="line.755"></a>
<span class="sourceLineNo">756</span>        }<a name="line.756"></a>
<span class="sourceLineNo">757</span>    }<a name="line.757"></a>
<span class="sourceLineNo">758</span>}<a name="line.758"></a>
<span class="sourceLineNo">759</span><a name="line.759"></a>




























































</pre>
</div>
</body>
</html>
